Systematized Nomenclature of Medicine, International Version	Randomized Controlled Trials Ontology	Source
http://www.owl-ontologies.com/RCTOntology.owl#Concept	http://purl.bioontology.org/ontology/SNMI/C-D2235	LOOM
http://www.owl-ontologies.com/RCTOntology.owl#Duration	http://purl.bioontology.org/ontology/SNMI/G-7290	LOOM